Rod-packing.



A. K. WAYCOTT.

ROD PACKING.

APPLIoATIoN FILED JUNEy 11, 1910.

1,072,679, Patented sepn9,1913.

f Mouw, v

coLUMBlA PLANoaRAPH c0.,wASHIN aaaaaaaaa ALBERT K. wAYoofrT, or ivnw YORK, 1v. Y.

Ron-PACKING.

Specification of Lettersl Patent.

ratentefisept. a, 1913.

Application iea June 11,1910. sriaiiao.566,397.

To all whom t may concern i Be it known that I, ALBERT K. WAYoo'rT,

a citizen of the United States, and a resident of New York, county and -StateV of New York, have invented certain new and use ful mprovements in Rod-Packings, of which the following is a full, clear, and eXact speci-f theV nuts thereupon the gland 16 may Vbe adjusted to hold the packing'lO'in the desired ication.

This invention relates to a class of pack-` ings made entirely of metal-and adapted for? use in connection with steam engines,steam` pumps, air compressors, refrigerator `plants within a housing or retaining-case 18. The

and the like.

The primary object of the invention is to' provide an eficient packing adapted more particularly for use upon piston rods to prevent the escape of air, steam, or other fluid,

and which in main structuralpartsl comprises a plurality of rings consisting each of a series of segments so formed that whenassembled the packing will conform to the inequalities of the piston rod resulting from wear or otherwise. n

Another object of the invention is to provide yielding means for properly holding the segments of the sectional rings when assembled and which will permit said rings to effectually prevent the escape of steam or other fluid under the variations of expansionand contraction of the piston rod at diiferent degrees of temperature, and a furtherobject of the invention is toY provide a casing or housing having seating chambers 1n which one sectionalY ring is employed instead of a pluralityof sectional rings as is usual with packings of this class in ordinary use.

A practical embodiment of the invention s is represented in the accompanying drawing forming a part of this specification in which similar characters of reference indicate corresponding parts in all the views, the said invention being more. fully described hereinafter and then pointed out in the appended claim. y

In the drawing, Figure 1 is an elevation of a stuiing boX and piston rod, partly fragmentary and partly sectional, showing one form of my packing applied thereto. Fig.

2 is a longitudinal vertical section through the packing. Fig. 3 isa top plan of the rings of the packing when assembled. Fig. 4 represents views, including perspectives of one segment of the outer packing ring and one segment of the inner packing ring.

As an important use of my invention in ypract-ice thepacking 10 isyshown. .in Fig. 1 vappliedto a piston rod 11 passing through a stuiing boX12 which may be of the usual or any preferredconstruction, and having a flange, as at 13, which is engaged by suitable screw bolts 14 held in the iange 15of a glan` d`16.v By manipulating said bolts and position within the stufling box 11. The packing 10 consists mainly of a plu rality of 'sets of sectional rings 17 inclosed retaining-case 18 is preferably formed of two parts 19 and 20to permit the packing to be conveniently assembled and fitted in the stuffing box 11 and around the piston rod 10. The outer surfaces of the retaining-case 18 are peripherally curved, 'as at 21 and 22, to allow suitable gaskets, 23 and 24,@to be interposed between said peripherally curved surfaces and the perimeter of the interior angle of the stufling box 11 andthe peripheral edge of the underside of the gland 16 respectively. Interiorly of the retaining-case 18 are formed circuinferential partition walls 25 by which are yprovided recesses or seating chambers 26, 27,

28. In my present invention VI preferably employ a form of the retaining-case 18 wherein each of the seating-chambers26, 27, 28 will accommodate only one set of the sectional rings 17 and by which the inequaliments 31, 32, 33, and each of said segments y is provided with a shouldeigas at 34, an interiorly beveled body portion, as 35, and an inwardly disposed bottom part, as 36, thereby providing in the casing-ring 29 when the segments thereof are assembled an annular recess 37 for the reception of the inner ring 30. Each of the inner rings 30 likewise consist of three segments 38, 39, 40, and eachl segment is formed with an outer straight circumferential surface, as 41, a beveled peripheral outer edge as at 42, and a straight ments will form the inner ring 30 which is adapted to llit snugly withinthe annular vre-y cess 37 of each casing ring 29.

In assembling the sectional rings 1'? in the recesses 26, 27, 28 of the retaining case ,18 and around the piston rodll the segments 31, 32, 33 of the casing-ring 29 and the seg-f ments 38, 39, of the inner ring 30 are so arranged that the segments of the inner ring 30 will overlap the seg-ments of the casingspaced apart, as-at 41A-v and 45. For eonv'en--' iently arranging the respective segments'of the casing-ring 29 and the inner ring 30 as ldescribed one ofthe segments of said casing` ring 29 is provided wit-n a dowel pin 46 which 1s adapted to register in a notch et? formed in the outer-edge of one ofthe seg- `ments of theinner rin-g 30, and oppositely disposed in one ofthe segments of said inner ring 30 is a dowel Apin 48 whichjis adapted to'registe'r in a notch 4:9 for-med in the casing-ring 29'.

As the 4peripheral* surface of piston` rods voften vary in diameter :and to allow my packing to conform with such inequalities as well as with the variationsresulting from expansion and contraction of the rod under different degrees of temperaturen peripheral groove 50 is formed in the outer surface of veach wall of the segments 31, 32, 33 o-f t-he casing-rings 29, and in saidl groove is arranged a'spiral spring 51 which is directed around the entire circumference of each of said casing-rings, and normally tendst'o yieldingly force the segments of the casingring 29 and inner ring 30 in uniform contact with thesurface of the piston rod.y

Thus from the foregoing it is obvious that a form of packing is provided which is.'

adapted for use upon piston rods and which will 'eifectually prevent the escape of air, steamk or other fluid when used in connection with steam engines, steam pumps, air compressors, refrigerator plants and the like.

Y f It is understood that changes may be made in the proportions of the segments 'forming the rings of my packing or in the shape and proportions of the retaining case and that my packing may be made of any desired material without departing from the spirit and scope of the invention herein illustrated and set forth.

Having thus described my invention, I claim as new and desire to secureV by Letters Y Patent c l In a rod packing, the combination with a stuffing box havingV acylindrical chamber therein, and having an annular flange upon the outer peripheral 'surface thereof, and means for securing. an interfitting gland within the said stutling box and said flange, ofy a segmental retaining ease having a pluadapted to receivea segmental packing ring, means for retaining'the seg-ments of said retaining case in position and annular flanges for separatingthe retaining case into compartments'V and .engage the piston rod, means for introducing a gasket in thek ends of the stufling box adjacent to said retaining case, `a segmentalr packing ring in each of said chambers i-nttheretaining'case, said packing being composed. of three, or more parts having'spaced openings between the ends thereof, and. a smaller segmental ring composed of three or more parts disposed within the outer ring, and having spacedfopenings between the ends, said openings alternating between the openings of the outer ring, said outer segmental ring being of a diameter vwherebyla Vspace is provided between the outer peripheral surfacel thereof and the Vinnerperipheral surface of the chamber of saidv gland, said segmental outer ring having a groove in the outer peripheral surface thereof', and. aspiral springrseated in said vgroove circumferentially of said ring, substantially as and for the purposes set fort-h. This specification Y' signed andV witnessed this tent-h day of J une A. D. 1910.

I ALBERT K. VAYCOTT. Witnesses :L Y Y Ro-T. B.V ABBOTT, C.y GrAssnRT.v

Copies of this patent may be obtained for five cents each, by addressing. the Commissioner of Patents,

Washington, D. C. i

rality. of4 annular chambers therein, eachY 

